Coupling



1940. J. P. REINHARDT Q 2,210,340

COUPLING Filed Ma 16, 1959 INVENTOR JOHN P. EE/NHAEDT BY W ATTORNEY Patented Aug. 6, 1940 v COUPLING I John P. ReinhardhBrooklyn, N. Application May '16, 1939, Serial lemma. 4 Claims. (01. ass-128$ This invention relates to couplings. It is par- 12. The pipes II and I2 are of similar outer diticularly directed to a couplingfor securing'toameter and said pipes have external screw gethe'r the meeting ends of pipes, the coupling threads adjacent ends H0. and [2a, respectively. being so constructed that the pipes may be cou- The 1 coupling l comprises a two part inner 6 pled'thereby without necessity for rotating or tubular sleeve comprising one part 14 having a turning the pipes. 1 semi-cylindricalportion thereoffcut-away at one Afurtherobject of this invention is to provide end thereof, as at 1 5. The sleeve part I4 has in a couplingof the character described, comprising ternal screw threads. l6 and external screw 7 a two part threaded sleeve receiving the screw threads ll. Y Y 1 10 threaded meeting ends of the pipes to be cou- Fitted within the cut-away portion I5, of 10 pled, and an outer sleeve to unitethe two parts sleeve part 14, is a semi-cylindrical member or of the first sleeve, and to cover the split between part I8 of the same thickness as the part l4 and said parts to prevent passage of any substance having internal screw threads 19 complementary through the split, as for example, when the couto the threads I6, and external screw threads pling is embedded in concrete. 20 complementary to the screw threads IT. The 6 A still further object of this'invention is to length of cut-out I5, and hence member I8, is provide astrong; rugged'and durable coupling of preferably about somewhat less than half of the the character described, which shall be relatively length of the sleeve part I4.

omen sTATEs v OFFICE inexpensive to manufacture, easy to manipulate, The sleeve part l4 may be screwed half Way on- 20 and which shall yet be practical and efficient to to the screw threaded portion 12a of the pipe I2. 20 a high de ree in use. The pipell2 should preferably not project beyond 1 Other objects of this invention will in part be the cylindrical portion of the sleeve part M. The obvious and in'part hereinafter pointed out. screw threaded portion Ila of the pipe H may The invention accordingly consists in the feathen be fitted into the upper portion of the sleeve tures of construction, combinations of elements, part M to engage the threads thereof. Member 25 and arrangement of parts'which will be eX- or part I8 may'then be fitted into the cut-away emplified in the construction hereinafter deportion 15 of the sleeve part 14, so that the screw scribed, and of which the scope of application threads lflthereof will engage the screw threads will be indicated inthe following claims. 'I la of the pipe H. q

In the accompanying drawing, in which is Screwed onto the upper end of the fitted to- 0 shown various possible illustrative embodiments gether sleeve parts l4 and I8 is an outer sleeve of this invention, 22 having internal screw threads 23 adapted to be Fig. l is a longitudinal, cross-sectional view screwed to the outer screw threads I1, 20 of said of a coupling embodying the invention, attaching parts. The sleeve 22 is of such length as to cover together the screw threaded meeting ends of a part l8 entirely, and to extend therebeyond, thus 35 pair of pipes; covering the entire split or the meeting surfaces Fig. 2 is a cross-sectional view taken on line between the parts 14 and I8. The sleeve 22 at 22 of Fig. 1; its upper end has an inwardly extending, annular Fig. 3 is a perspective View of the two parts of flange 24 adapted to contact the upper edges the inner sleeve of the coupling, separated from of sleeve parts M- and I8 serving as a stop to limit 40 one another; movement of the outer sleeve relative to the in- Fig. 4 is a view similar to Fig. 1, but illustrating ner sleeve. At the outer surface thereof, the a modified construction; sleeve 22 may be formed with longitudinal ribs Fig. 5 is a view similar to Fig. 1, but illustrating 25, serving as grips for a wrench. a still further modified construction; The sleeve 22 is first passed onto the pipe ll 45 Fig. 6 is a cross-sectional view taken on line before the member I4 is screwed to the pipe l2, 6-8 of Fig. 5; so that it will be in position for screwing onto Fig. 7 is a view similar to Fig. 1, and illustrating the sleeve parts l4 and I8. a modified form of the invention; and It will be noted that the sleeve 22 covers the Fig. 8 is a cross-sectional view taken on line split between the parts l4 and I8 so as to ex- 50 8-8 of Fig. 7. clude passage of any substance through the split Referring now in detail 'to the drawing, l0 between said parts, as for example, when the coudesignates a coupling embodying the invention, p ing is embedded in concrete.

to couple together or attach together the screw The coupling Illa shown in Fig. 4 is similar to threaded meeting ends of a pair of pipes II and the coupling ll] of Fig. 1, with the exception that the inner surface of part l8a of the inner sleeve of the former is smooth, the screw threads I9 being eliminated.

In Figs. and 6 there is shown a coupling lob illustrating a modified construction. The coupling lob comprises a sleeve part 30 having internal screw threads 3|. The sleeve part 30 has a semi-cylindrical cut-away portion 32 at one end thereof, to receive a semi-cylindrical sleeve part 33 having internal screw threads-34 complementary to the screw threads 3|.

Sleeve parts 30 and 33 are formed with contacting diametrically disposed, apertured ears 30a and 34a receiving bolts 35 for fixing said parts together. Sleeve part 30 is screwed half way onto the screw threaded portion I20, of pipe l2. The lower end Ilaof pipe H fits into the upper portion of the sleeve part 30. Sleeve part 33 is then fitted within the cut-away portion 32 and is attached to the part 30. Thereafter, a split spring ring 40 of somewhat greater than semicircular extent may be snapped onto the sleeve part 30 to cover the lower edge of part 33 for preventing any material from passing into the coupling.

In Figs. '7 and 8 there is shown a coupling I00 comprising a pair of complementary semi-cylindrical sleeve parts 44 having complementary internal screw threads 45 to receive the screw threaded end portions Ila and 12a of the pipes II and I2. The semi-cylindrical parts 44 together form a cylindrical sleeve.

Slidably mounted on said sleeve is an outer sleeve 41, having a smooth inner surface and formed at one end with an annular flange 48 contacting one end of the split sleeve. On sleeve 41 is a set screw 49 adapted to be screwed against the sleeve 44 to retain the outer sleeve 41 against movement.

It will thus be seen that there is provided a device in which the severalobjects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to'secure by Letters Patent:

1. A coupling comprising a cylindrical sleeve formed at one end with a semi-cylindrical cutout extending substantially half the length of said sleeve, said sleeve having external and internal screw threads, a semi-cylindrical member fitting into said cut-out and having internal and external screw threads complementary to the internal and external screw threads of the sleeve, and an outer sleeve screwed onto said end of said first sleeve and onto said semi-cylindrical member, said outer sleeve having an inwardly extending annular flange at one end, and being of greater length than said semi-cylindrical memher.

2. A coupling comprising a cylindrical sleeve formed at one end with a semi-cylindrical cutout extending substantially half the length of said sleeve, said sleeve having external and internal screw threads, a semi-cylindrical member fitting into said cut-out and having internal and external screw threads complementary to the internal and external screw threads of the sleeve,

and an outer sleeve screwed onto said end of said first sleeve and onto said semi-cylindrical member, said outer sleeve having aninwardly extending annular flange at one end, and being of greater length than said semi-cylindrical member, said outer sleeve having longitudinal ribs on the outer surface thereof.

3. A coupling comprising a sleeve having a cylindrical portion and a semi-cylindrical cutaway portion, a semi-cylindrical member fitting into said cut away portion, said sleeve being formed with internal and external threads, said semi-cylindrical member having external screw threads complementary to the external screw threads of the sleeve, and means for attaching said sleeve to said member.

4. A coupling comprising a sleeve having a semi-cylindrical cut-away portion at one end and being formed with internal threads, a semicylindrical member fitted within said cut-away portion, and an outer sleeve on said end of said first sleeve and member, and having an inwardly extending portion at one end adapted to contact said end of said first sleeve and entirely covering the semi-cylindrical member.

JOHN P. REINHARDT. 

